Brake



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v T. zsMMERMAN BRAKE Filed Feb. 6;. 1919 wwentor ZfMwEEMA/V.

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THE EATON AXLE & SPRING COMPANY, OHIO.

OF CLEVELAND, OHIO, A CORPORATION OF BRAKE.

Application filed February 6, 1919. Serial No. 275,366.

To all whom t may concern:

Be it known that I, THOMAS ZIMMnnMA-N, `a citizen of tthe United States,and a resident of Cleveland, county of Cuyahoga,- State of Ohio, haveinvented certain new and useful Improvements in Brakes, of which thefollowing is a specification.

This invention relates to brakes and has for its object the provision ofa brake band so arranged that neither end will be drawn away from thebrake drum by the actuating mechanism, thereby improving the eiliciencand durability of the brake. t

Ot er objects and the features of novelty will be apparent from thefollowing description taken in lconnection with the l'accomanyingdrawing, which is a side View of a brake embodying the invention. l

Referring to the drawing, indicates the cylindrical flange of theordinary brake drum that is usually employed on a motor vehicle. Theflange 10 is shown in section, and, for clearness, the center of thedrum h been. omitted. A bracket 11,- Asuch as de commonly employed andsecured to the stationary aztle (not shown), carries an anchor pin, orstud, 12 for the brake band 13, which, in the present case, is shown asoperating on the interior of the' drum l0. The band 13 may be in one ormore sections and has on its outer surface the brake lin' ing 14* and onits inner surface a bracketl 15 slotted to receive the anchor 12,whereby the band Vis held from rotation with the drum 10, when appliedto the latter.

The brake band is split, as indicated at 16, and the ends 17.and 18 arerelatively .movable circumferentially, for the purpose of epanding andcontracting the band. The'f'e'nd 17 carries a bracket 19 and the end 18fcarries` 'a bracket 20, .and these brackets are unsymmetricallyarranged with` :by the overlapping respect to the ends of the band,being circumferentially offset relative to the space between. the endsof the band and have the opposing surfaces 21 and 22, respectively,which cooperate with the cam 23, the latter being the means foractuating the brake. It

'.will be observed that the bracket 19 overlaps the end 18 of the bandand prevents 50 the latter from moving radially inward.

When the cam 23 is rotated in the direction of the arrow tbereomtor thepurpose of setting the brake, the corner 21 of the, cam tends to `dragthe bracket 19 and the 55 end 17 of the brake band outwardly againstthev brake drum, whereas the corner 25 of the cam tends to -drag thebracket 20 and the end 18 of the brake band in the opposite direction,or away from the brake drum.

The latter movement, however, is prevented,

arrangement of the bracket 19 and the end 18 of the band, so 1 that thelatter moves only eircumferentially. to expand the band against thedrum. Having thus described my invention, what I claim 1s: In brakemechanism, the combination of a brake drum, al brake band coope atingtherewith and having sli htly space ends relatively movable circum'erentially of said drum, a pair of spacedbrackets,one secured to eachof said ends, arran ed in circumferentially offset relation to it espace between the ends of said bandvwhereby one of said 76 bracketsprojects acrossythe space between the ends of said band and overlaps anden gages the opposite end of the bandywhen the latter is lpressedagainst said drum, and

actuatin means between said brackets and 80 cooperating therewith. i

In testimony whereof 'I aiix my signature.

- THOMAS ZIMMERMAN.

